/* coglossa.com. Bonham's visual language (bonham.tech): near-black and amber, a faint grid, a
   serif display face, a monospaced label face. Colours are tokens; dark is the default look
   and light follows the reader's system setting. */

@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/instrument-serif-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Instrument Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/instrument-serif-latin-400-italic.woff2") format("woff2");
}
@font-face {
  font-family: "DM Sans";
  font-style: normal;
  font-weight: 100 1000;
  font-display: swap;
  src: url("fonts/dm-sans-latin-wght-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/geist-mono-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/geist-mono-latin-500-normal.woff2") format("woff2");
}

:root {
  color-scheme: dark light;
  --bg: #0a0a0b;
  --bg-raised: #111113;
  --bg-sunken: #18181b;
  --text: #fafafa;
  --text-soft: #b4b4bc;
  --text-muted: #8f8f99;
  --accent: #f59e0b;
  --accent-text: #fbbf24;
  --accent-hover: #fbbf24;
  --on-accent: #0a0a0b;
  --accent-wash: rgba(245, 158, 11, 0.12);
  --grid: rgba(245, 158, 11, 0.045);
  --border: #27272a;
  --border-strong: #3f3f46;
  --mark: rgba(245, 158, 11, 0.32);
  --ok: #4ade80;
  --warn-wash: rgba(245, 158, 11, 0.1);
  --header-bg: rgba(10, 10, 11, 0.86);
  --focus: #fbbf24;

  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #fbfaf7;
    --bg-raised: #ffffff;
    --bg-sunken: #f3f1ec;
    --text: #18181b;
    --text-soft: #3f3f46;
    --text-muted: #5c5c66;
    --accent: #f59e0b;
    --accent-text: #a14a06;
    --accent-hover: #d97706;
    --on-accent: #18181b;
    --accent-wash: rgba(217, 119, 6, 0.1);
    --grid: rgba(180, 83, 9, 0.05);
    --border: #e4e1da;
    --border-strong: #c9c5bc;
    --mark: rgba(245, 158, 11, 0.35);
    --ok: #15803d;
    --warn-wash: rgba(245, 158, 11, 0.12);
    --header-bg: rgba(251, 250, 247, 0.9);
    --focus: #a14a06;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid) 2px, transparent 2px),
    linear-gradient(90deg, var(--grid) 2px, transparent 2px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--accent-text);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--text);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.88em;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  border-radius: 0 0 8px 0;
}

.skip-link:focus {
  left: 0;
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.wordmark {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text);
  text-decoration: none;
}

.wordmark span {
  color: var(--accent-text);
}

.site-header ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header ul a {
  font-size: 14px;
  color: var(--text-soft);
  text-decoration: none;
}

.site-header ul a:hover {
  color: var(--text);
  text-decoration: underline;
}

/* Hero */

.hero {
  padding-top: 112px;
  padding-bottom: 88px;
}

.eyebrow,
.label {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--accent-text);
  margin: 0 0 24px;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(44px, 8vw, 80px);
  max-width: 14ch;
  margin-bottom: 32px;
}

h1 em,
h2 em {
  color: var(--accent-text);
}

.lede {
  font-size: 19px;
  color: var(--text-soft);
  max-width: 600px;
  margin: 0 0 40px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.button {
  display: inline-flex;
  align-items: center;
  padding: 14px 26px;
  border-radius: 8px;
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.button:hover {
  color: var(--text);
  background: var(--bg-raised);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}

.button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--on-accent);
}

/* Sections */

section {
  padding: 88px 0;
}

section.band {
  background: var(--bg-raised);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.label {
  color: var(--text-muted);
  margin: 0 0 14px;
}

h2 {
  font-size: clamp(32px, 5vw, 48px);
  margin-bottom: 28px;
  max-width: 22ch;
}

h3 {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin: 0 0 10px;
}

.intro {
  color: var(--text-soft);
  max-width: 680px;
  margin: 0 0 48px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: 32px 64px;
}

.two-col p {
  color: var(--text-soft);
  margin: 0 0 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 26px 26px 22px;
}

.band .card {
  background: var(--bg);
}

.card p {
  font-size: 15.5px;
  color: var(--text-soft);
  margin: 0;
}

.card p + p {
  margin-top: 10px;
}

.step {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent-text);
  margin-bottom: 10px;
}

.plain-list {
  margin: 0;
  padding-left: 1.2em;
  color: var(--text-soft);
}

.plain-list li + li {
  margin-top: 8px;
}

.flags {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 12px 32px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.flags li {
  padding-left: 30px;
  position: relative;
  color: var(--text-soft);
  font-size: 15.5px;
}

.flags li::before {
  content: "⚠";
  position: absolute;
  left: 0;
  color: var(--accent-text);
}

.flags strong {
  color: var(--text);
  font-weight: 600;
}

.flags-title {
  margin-top: 56px;
}

.intro.tight {
  margin-bottom: 0;
}

/* Demo */

.note {
  border: 1px solid var(--border-strong);
  border-left: 4px solid var(--accent);
  background: var(--warn-wash);
  border-radius: 8px;
  padding: 16px 20px;
  max-width: 820px;
  margin: 0 0 40px;
  color: var(--text-soft);
  font-size: 15.5px;
}

.note p {
  margin: 0;
}

.note p + p {
  margin-top: 8px;
}

.frame {
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-sunken);
  margin: 0;
}

figure {
  margin: 0;
}

figcaption {
  font-size: 15px;
  color: var(--text-muted);
  margin-top: 12px;
}

.video figcaption {
  margin-bottom: 56px;
}

.shots {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 56px;
}

.shot {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 20px 36px;
  align-items: start;
}

.shot p {
  margin: 0;
  color: var(--text-soft);
}

.shot.narrow {
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
}

.shot.narrow .frame {
  max-width: 360px;
}

@media (max-width: 760px) {
  .shot,
  .shot.narrow {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* The sample passage */

.sample {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  overflow: hidden;
}

.sample > header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 24px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-muted);
}

.sample dl {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
}

.sample dt,
.sample dd {
  margin: 0;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.sample dt {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding-top: 19px;
}

.sample dd {
  color: var(--text);
}

.sample dd p {
  margin: 0;
}

.sample dd p + p,
.sample dd ul {
  margin-top: 6px;
}

.sample dd ul {
  padding-left: 1.1em;
  margin-bottom: 0;
}

.sample .muted {
  color: var(--text-muted);
  font-size: 15px;
}

.sample mark {
  background: var(--mark);
  color: inherit;
  padding: 0 3px;
  border-radius: 3px;
}

.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-soft);
  margin-right: 6px;
}

.badge.ok {
  color: var(--ok);
}

.scores {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  font-family: var(--mono);
  font-size: 14px;
}

.sample footer {
  padding: 16px 24px;
  font-size: 15px;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .sample dl {
    grid-template-columns: minmax(0, 1fr);
  }

  .sample dt {
    border-bottom: 0;
    padding-bottom: 0;
  }
}

/* Running it */

pre {
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  overflow-x: auto;
  line-height: 1.6;
  color: var(--text);
  margin: 0 0 18px;
}

pre .c {
  color: var(--text-muted);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 56px;
  font-size: 14.5px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

.site-footer p {
  margin: 0 0 8px;
}

.placeholder {
  border: 2px dashed var(--accent);
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text);
}